i have rebpooted my moms computer & my dads along with the router & modem. Cable company rebooted modem & did not help either. Now that I think back, dads computer is reading my moms isp address and it says the connection strength is excellent & it is connected but just will not give internet access - it just displays that the web page (yahoo) is not available.
maybe a linksys router is all he needs instead of the netgear one.
And he does have a wireless thingy plugged into the back of his tower.